Graphing linear functions Graphing linear functions This section focuses on the key features and methods for working with linear graphs. It demonstrates how to sketch graphs from rules, derive rules ...

Solving linear inequalities Inequalities are generally solved using the same steps as for equations, except when multiplying or dividing both sides of an inequality by a negative number, in which case ...

For example, the coordinates (-7, 7), (2, -2) and (9, -9) have 𝒙 and 𝒚 values that are equal in size, but with opposite signs, one being positive and the other negative.